Metamorphic Rock (Formed From A Fibrous Crocidolite Asbestos)

Serpentine

Serpentinite; chiefly antigorite, lizardite, or chrysotile Mg₃Si₂O₅(OH)₄

Tumbled serpentine

Serpentine-group minerals, chiefly antigorite, lizardite, or chrysotile; approximate formula Mg₃Si₂O₅(OH)₄

Serpentinite

Serpentinite (Mg, Fe, Ni, Al, Zn, Mn)2-3(Si, Al, Fe)2O5(OH)4

Blue Quartz

Silicon Dioxide (SiO2) with inclusions

Serpentine

(Mg,Fe)3Si2O5(OH)4

Serpentine

(Mg,Fe)3Si2O5(OH)4

Serpentine

Serpentine group ((Mg, Fe)3Si2O5(OH)4)

Polished tiger’s-eye

Chatoyant quartz, chiefly fibrous quartz pseudomorph after crocidolite; SiO₂

Tumbled yellow-green stone, possibly serpentine

Likely serpentine-group mineral (Mg₃Si₂O₅(OH)₄); exact identification requires testing

Serpentinite

Serpentinite (complex silicate minerals including lizardite, chrysotile, and antigorite: (Mg,Fe)3Si2O5(OH)4)

Serpentinite with carbonate veins and weathering rind

Serpentinite; chiefly serpentine-group minerals (antigorite, lizardite, chrysotile), with calcite/magnesite and accessory magnetite

Dumortierite Quartz (Blue Quartz)

Al7BO3(SiO4)3O3 (Aluminum Boro-silicate included in Quartz)

Tumbled tiger’s-eye (probable)

Quartz, SiO₂, with fibrous amphibole pseudomorphs

Tumbled tiger’s eye

Quartz (SiO₂) with fibrous crocidolite-derived inclusions

Green serpentine or nephrite-like stone

Serpentinite, chiefly serpentine-group minerals; exact identification would require testing

Serpentine

Antigorite, Lizardite, or Chrysotile (Mg, Fe)3Si2O5(OH)4

Tiger’s-eye (likely rough chatoyant quartz)

Quartz, SiO₂, with fibrous pseudomorphic alteration of crocidolite (often called tiger’s-eye)

Polished green serpentine (likely bowenite)

Serpentine-group minerals, chiefly antigorite and/or lizardite; bowenite is a compact, nickel-bearing serpentine variety

Serpentine / Antigorite

Mg3Si2O5(OH)4 (Serpentine Group)

Serpentinite

Serpentinite (Mg, Fe, Ni, Al, Zn, Mn)3Si2O5(OH)4

Serpentinite (likely brecciated serpentinite)

Serpentinite; primarily serpentine-group minerals (antigorite, lizardite, chrysotile), commonly with magnetite, brucite, and relict olivine/pyroxene

Serpentine-rich ultramafic rock (likely serpentinite)

Serpentinite; chiefly serpentine-group minerals (Mg₃Si₂O₅(OH)₄), with possible magnetite, carbonates, and relict olivine/pyroxene

Polished tiger’s-eye and jasper specimen

Quartz (SiO₂), chiefly fibrous chatoyant quartz, with iron-oxide-rich jasper/goethite

Tumbled serpentine

Serpentine-group minerals, chiefly antigorite/lizardite; approximate formula Mg₃Si₂O₅(OH)₄

Polished blue-green stone, likely serpentine or chrysocolla-bearing rock

Serpentine-group minerals, chiefly Mg₃Si₂O₅(OH)₄; exact identification requires testing

Greenstone / Serpentinite

Serpentinite (Mg, Fe, Ni, Al, Zn, Mn)3(Si, Al, Fe)2O5(OH)4

Serpentinite

Serpentinite (complex silicate minerals including lizardite, chrysotile, and antigorite)

Serpentine (polished/tumbled)

Serpentinite; predominantly antigorite, lizardite, and/or chrysotile, commonly with magnetite

Serpentinite

Serpentinite (composed primarily of Serpentine group minerals: (Mg,Fe)3Si2O5(OH)4)

Tumbled tiger’s-eye or iron-rich jasper

Quartz-rich chalcedony/jasper with fibrous crocidolite-derived tiger’s-eye and iron oxides

Serpentine (Infinite Stone)

Serpentinite (Hydrous magnesium iron silicate)

Serpentinite

Serpentinite (composed primarily of Serpentine group minerals (Mg,Fe,Ni,Al,Zn,Mn)2-3(Si,Al,Fe)2O5(OH)4)

Polished serpentine pebble

Serpentinite, chiefly antigorite/lizardite Mg₃Si₂O₅(OH)₄

Serpentinite

Serpentinite (composed primarily of Serpentine group minerals: (Mg,Fe)3Si2O5(OH)4)

Serpentinite

Serpentinite (composed primarily of Serpentine group minerals like Antigorite, Lizardite, and Chrysotile)

Serpentine

Serpentine-group (Mg, Fe, Ni, Al, Zn, Mn)2-3(Si, Al, Fe)2O5(OH)4

Polished white-green serpentine pebble

Serpentine-group minerals, chiefly antigorite or lizardite; commonly sold as “new jade”

Serpentine (likely serpentinite)

Serpentinite; chiefly serpentine-group minerals (antigorite, lizardite, chrysotile), commonly with magnetite and chromite

Tumbled serpentine

Serpentinite; chiefly antigorite, lizardite, or chrysotile Mg₃Si₂O₅(OH)₄, with possible magnetite and carbonate

Serpentine

(Mg,Fe)3Si2O5(OH)4

Serpentinite (likely antigorite-rich)

Serpentinite; hydrated Mg-rich silicate minerals, chiefly antigorite (Mg3Si2O5(OH)4), with possible chrysotile/lizardite and magnetite

Serpentinite

Serpentinite (Mg, Fe, Ni, Al, Zn, Mn)2-3(Si, Al, Fe)2O5(OH)4